You are given an array of distinct integers arr and an array of integer arrays pieces, where the integers across all elements of pieces are also distinct.

Determine whether you can form arr by concatenating the arrays in pieces in any order. You are not allowed to reorder the integers within any individual array pieces[i].

Return true if it is possible to form arr from pieces, otherwise return false.

Constraints:

• $1 \leq$ pieces.length $\leq$ arr.length $\leq 100$

• sum(pieces[i].length) $=$ arr.length

• $1 \leq$ pieces[i].length $\leq$ arr.length

• $1 \leq$ arr[i], pieces[i][j] $\leq 100$

• The integers in arr are distinct.

• The integers in pieces are distinct (i.e., if pieces is flattened into a $1$D array, all integers in the resulting array are distinct).

Now, let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:

We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.

Implement your solution in the following coding playground.